Set up the percent proportion, and write "unknown" for the value that is not given. Recall that the percent proportion is 
= 
. Do not try to solve for any unknowns.5.2 is what percent of 14.3?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Answer: B
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Solve the problem.A satellite dish has a parabolic cross section and is 14 feet deep. The focus is 4 feet from the vertex. Find the width of the satellite dish at the opening. Round your answer to the nearest foot.
A. 30 ft B. 34 ft C. 38 ft D. 32 ft
Solve the problem.A cyclist bikes at a constant speed for 17 miles. He then returns home at the same speed but takes a different route. His return trip takes one hour longer and is 22 miles. Find his speed.
A. 6 mph B. 4 mph C. 7 mph D. 5 mph
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A. (6a2 - 5b)(5a - 4b) B. (30a2 - 5b2)(a - 4b) C. (6a2 + 5b2)(5a + 4b) D. (6a2 - 5b2)(5a - 4b)
Solve the problem.Walt made an extra $5000 last year from a part-time job. He invested part of the money at 10% and the rest at 9%. He made a total of $460 in interest. How much was invested at 9%?
A. $4000 B. $2500 C. $3000 D. $1000